Head of Admiralty can navigate remotely (7)
I believe the answer is:
aloofly
'remotely' is the definition.
'head of admiralty can navigate' is the wordplay.
'head of' suggests taking the first letters.
'can' becomes 'loo' (loo is a kind of can).
'navigate' becomes 'fly'.
The initial letter of 'admiralty' is 'a'.
'a'+'loo'+'fly'='ALOOFLY'
(Other definitions for aloofly that I've seen before include "Keeping apart from" , "in a cold manner?" , "Distantly" , "How to disconnect, perhaps" .)